They have the same writers. They main character is also a twin in both dramas. There is a prophecy about the twin characters in the drama that is important to the plot. They also both have complex characters, meaning likeable villains, protagonists with a dark side, and characters which we won't understand at first if they're good or evil

They have the same writers. They main character is also a twin in both dramas. There is a prophecy about the twin characters in the drama that is important to the plot. They also both have complex characters, meaning likeable villains, protagonists with a dark side, and characters which we won't understand at first if they're good or evil

Similarities
=> Historical drama starring Lee Joon Gi
=> Excellent action stunts
=> Main character's father died, he takes on a different identity to find his father's killer
=> Main character (aside from his main disguise), also used various identities (thus wears various costumes) to fulfill his mission
=> Main character becomes hero of the people along the way.
Differences:
=> Iljimae uses swords, Joseon Gunman uses guns
=> lljimae is set around 1600s, Joseon Gunman is in late 1800s, close to end of Joseon dynasty
In my opinion: Iljimae>Joseon Gunman, but both shows has their own merits.

1. Both dramas have Moon Geun Young's character having relationships with older men.\
2. Actually, the main reason I'm recommending Painter of the Wind is because it's such an underrated drama and more people need to watch it. Especially Moon Geun Young fans, Moon Geun Young showed superb acting skills in Painter and it is her work that made her receive a daesang and a baeksang award.
(Bonus: Park Jin Woo, Moon Geun Young's boyfriend in My Little Bride, also plays her same age rival student in Painter of the Wind).

Both feature two artists (one older and one younger) who eventually worked for the king as the king were impressed by their skills. Except in Painter of the Wind, the artists are painters, while in King and the Clown, the artists are male clowns. The two main artists in both shows also really care for each other and are willing to sacrifice a lot for one another. Homosexual themes prevail in both shows though presented quite differently. In King and the Clown, you have a feminine male clown and two other men (one fellow clown and the other is the king himself) who can both possibly be interpreted as having some sort of feelings for him. In Painter of the Wind, the younger female artists has lived as a man her whole life and the older male artist who thinks she's a man can possibly think of himself as homosexual since he is having some feelings for a fellow male artist. In addition, the female-pretending-to-be-a male artist in Painter of the Wind is also shows to have another love interest that can be interpreted as homosexual, that is her relationship and fascination with a female gisaeng

I know the two dramas are very different, but I am recommending Queen Seon Deok to Fiery Priest fans because Kim Nam Gil's role as Bidam in Queen Seon Deok is simply unforgettable. Kim Nam Gil's shows both comedic and serious acting that eventually gave him his best new actor nomination at baeksang for Queen Seon Deok. He first appears in Episode 21 or 22. But I still recommend people to watch the whole drama since the whole drama is epic.
For Queen Seon Deok fans, Fiery Priest is a drama where Kim Nam Gil is the main character (you don't have to wait more than 20 episodes for him to appear). You can guarantee he gives great performance in Fiery Priest, he was after all nominated for another baeksang award for this role, he won daesang at SBS awards as well.

For new fans of Lee Tae Ri from this drama, you need to check him out in Moon Embracing the Sun. He is such an underrated actor because he was acting next to today’s popular young actors Yeo Jin Goo, Kim Yoo Jung, and Kim So Hyun but somehow wasn’t noticed by the masses unlike the other three.
The two dramas are not very similar. But Extraordinary You has a historical part where the main love triangle of two guys and one girl is featured. If you enjoyed that, you might like the historical dram Moon Embracing the Sun also, where all the other plotlines is subservient to the love and romance story. Also, if you like seeing Lee Tae Ri in historical costumes in Extraordinary You, you can see him rock those in the first six episodes of Moon Embracing the Sun as the young version of the second male lead.

Both are Joseon period dramas starring Ha Ji Won. Both also happen to be underrated historical dramas of hers in comparison to Empress Ki. I watched both these dramas next to each other and became an instant fan of Ha Ji Won. Who could imagine that the graceful Ji Ni can also be the action queen Chae Ok?

Painting plays an important part in both dramas. It’s so important since the female lead in both dramas have talents in painting. King Jeongjo features in both dramas (though he’s not the main character in Painter). Since it’s both about King Jeongjo, you expect to see a glimpse of his sadness and grief due to the early death of his father Prince Sado, political battles against his step-grandmother the wife of the former king, plus you can see a loyal minister to him named Hong Guk Young.

For Binjin fans. Hyun Bin and Son Ye Jin both appear in both shows. There is no loveline in The Negotiation but there is in Crash Landing on You. If you can't get enough of the two together, I recommend one show for fans of the other and vice versa.

They are not very similar, but both of them are Song Joong Ki's dramas. I am recommending Arthdal to SJK fans watching Vincenzo because it is a very underrated drama and I feel that SJK great performance in Arthdal needs more atttention. Aside from Song Joong Ki, Yang Kyung Won and Choi Young Joon (also in Vincenzo) also had small/supporting roles in Arthdal.
Arthdal comes in multiple seasons. As of March 16, 2021, only the first season is released. The first season is divided in parts, of which this particular show of Arthdal I am recommending is part 3.

They are not very similar, but both of them are Song Joong Ki's dramas. I am recommending Arthdal to SJK fans watching Vincenzo because it is a very underrated drama and I feel that SJK great performance in Arthdal needs more atttention. Aside from Song Joong Ki, Yang Kyung Won and Choi Young Joon (also in Vincenzo) also had small/supporting roles in Arthdal.
Arthdal comes in multiple seasons. As of March 16, 2021, only the first season is released. The first season is divided in parts, of which this particular show of Arthdal I am recommending is part 2.